This Summer, Enjoy a "Slightly Upscale Korean Journey" at "Shabu-shabu Onyasai"! Limited-Time Fair Featuring Two Types of Korean Hot Pots: "Seafood Kimchi Hot Pot" & "Gomtan Hot Pot," and the Korean Food Culture of "Banchan"

Rains International Co., Ltd., operating under the Colowide Group, is pleased to announce that its "Shabu-shabu Onyasai" (hereinafter referred to as "Onyasai") will be holding a limited-time Korean Fair starting Wednesday, July 15, 2026. This fair will feature "Seafood Kimchi Hot Pot" and "Gomtan Hot Pot," along with small side dishes inspired by "banchan," a symbol of Korean dining culture. You can enjoy a "slightly upscale Korean journey" without leaving Japan.

*What is Banchan (반찬)? Banchan is a general term for small side dishes served at Korean meals. It is a unique Korean dining culture where people enjoy meals by tasting multiple dishes in small portions. In restaurants, banchan are often served with set meals or main dishes, and some establishments offer free refills.

"Seafood Kimchi Hot Pot & Gomtan Hot Pot" - Learn More Here

~Enjoy an Authentic Korean Table with Two Types of Korean Hot Pots and "Banchan Culture"~

In recent years, Korean entertainment and culture have gained global popularity, and Korean cuisine is also loved by a wide range of generations. Amidst growing interest in traveling to Korea, there is also increasing attention on the unique food culture of the country.

Therefore, Onyasai is holding a limited-time fair with the theme of "Gentle on the body, good things," incorporating popular Korean hot pot dishes and the "banchan culture" rooted in Korean dining. The "Seafood Kimchi Hot Pot" that will be introduced this time has a deep flavor harmonizing the umami of seafood with a moderate spiciness, while the "Gomtan Hot Pot" is characterized by its mellow and gentle taste, developed by slowly extracting the umami of beef. You can enjoy the diverse appeal of Korean hot pots, not just their spiciness.

Onyasai also offers a rich selection of exquisite dishes that can be enjoyed alongside shabu-shabu. For this fair, as limited-time menu items inspired by "banchan (small side dishes)," essential to the Korean table, we will be offering "Three Kinds of Domestic Vegetable Namul," "Spicy Korean Cucumber," and "Rosé Cream Tteokbokki," as well as Onyasai's original "Kongguksu (Noodle Dish)" and "Bingsu (Shaved Ice)." You can enjoy the "banchan culture" as if gathering around a Korean table, savoring various dishes in small portions along with the hot pot.

[Limited Time] Summer Feast Korean Hot Pots Enjoyed with Two Types of Broths

● Seafood Kimchi Broth with the Aroma of Three Kinds of Seafood

Seafood Kimchi Hot Pot is one of Korea's representative hot pot dishes, utilizing the umami of seafood and the spiciness of chili peppers. At Onyasai, we have created a deep flavor by combining gochujang, chili powder, garlic, and seafood extracts such as clams, crab, and krill. You can enjoy a rich umami created by multiple seafoods and a satisfying "spicy and savory" taste with a moderate chili kick.

▶ Recommended Ingredients: "Sangenton Pork Shabu" "Oshi Tofu" "Chewy Water Dumplings"

● Gomtan Broth Full of Beef Umami

Gomtan, characterized by its pale milky white color, is a traditional Korean soup made by simmering beef, beef bones, and other ingredients. Its mellow and gentle taste, infused with the umami of beef, is popular in Korea not only for everyday meals but also when seeking nourishment. At Onyasai, we have carefully extracted the beef's umami while creating a clean aftertaste, so as to enhance the natural flavors of ingredients like vegetables and meat.

▶ Recommended Ingredients: "Special Select Beef Shabu" "Sharegi" (a type of green onion)

[NEW] Yangnyeomjang

A versatile seasoning essential for Korean cuisine, made by combining chili peppers, garlic, soy sauce, ginger, and more. It features a pungent spiciness along with fermented umami and richness, which sharpens the overall flavor of dishes. It is recommended for those seeking to add spice or change the flavor.

[Limited Time] "Banchan (Side Dishes)" to Brighten Your Korean Table

[NEW] Three Kinds of Domestic Vegetable Namul

We have prepared namul, a classic Korean side dish, using okra, sweet carrots, and soybean sprouts. Based on sesame oil and salt, with a moderate hint of garlic, it enhances the natural sweetness and umami of the ingredients. It is a healthy and well-balanced dish that can be enjoyed for its crisp texture and gentle flavor.

[NEW] Spicy Korean Cucumber

A Korean-style cucumber snack finished with yangnyeomjang for a spicy kick. The refreshing and crisp texture of the cucumber is enhanced by the moderate spiciness and umami of the yangnyeomjang, creating an addictive flavor. It is a perfect dish as a palate cleanser or an accompaniment to drinks.

[NEW] Rosé Cream Tteokbokki

We have arranged the popular Korean Rosé Cream Tteokbokki in the Onyasai style by combining milk, cream, shredded cheese, and yangnyeomjang. It features a gentle flavor with a perfect harmony of the moderate spiciness of yangnyeomjang and the mellow richness of cream. It is a visually appealing dish that is easy for those who are not accustomed to spicy food to enjoy.

[NEW] Soy Milk Cold Noodles (Onyasai Style Kongguksu)

Kongguksu is a representative Korean summer cold noodle dish, made by combining noodles with a cold soy milk soup made from ground soybeans. At Onyasai, we have uniquely blended Rishiri kelp broth, soy milk broth, and sesame sauce to create a rich yet refreshing taste that you won't get tired of. It is a satisfying dish that can be easily enjoyed even in hot weather.

Plus! A Variety of Onyasai's "Banchan (Side Dishes)"

Onyasai offers a wide selection of side dishes that can be enjoyed in various ways, from appetizers and exquisite dishes to salads, serving as palate cleansers between meals or as accompaniments to drinks. All-you-can-eat courses include these regular menu items as well as limited-time specials.

▼ Appetizers

Cucumber with Mentaiko Mayonnaise

Salted Edamame

Marinated Quail Eggs

Grilled Chicken Skin with Grated Radish Ponzu

Kimchi

Bean Sprout and Soybean Sprout Namul

Caprese

▼ Exquisite Dishes

Dashimaki Tamago with Tofu Skin Ankake

Hokkaido Specialty "Jagakara" (Fried Potatoes)

Chawanmushi with Hand-Smoked Bonito Flakes and Yuba Ankake

Honey Lemon Cream Cheese Canapés

Salted Beef Tongue Salad Style

▼ Salads

Domestic Vegetable Bagna Cauda

Crispy Lettuce Choregi Salad

[Limited Time] Seasonal Vegetables in Season to Enjoy with Korean Hot Pot

[NEW] White Eggplant [NEW] Okra

As recommended domestic vegetables for Korean hot pot, we introduce "White Eggplant" and "Okra," which are in season during summer! The juicy and tender white eggplant becomes melt-in-your-mouth when cooked as shabu-shabu. Okra, on the other hand, has a moderate sliminess and a crisp texture, making it an excellent match for Korean hot pot. As the broth soaks in well, these vegetables are easy for children to eat and can be enjoyed safely by the whole family.

[Limited Time] Chilled Desserts to Feel the Korean Summer

*Desserts in the all-you-can-eat menu are limited to one per person.

[NEW] Yogurt Ice Cream and Lemon Bingsu

A perfect Korean-style dessert for summer, combining popular Korean yogurt ice cream with "Bingsu," a Korean summer staple. The refreshing tartness of lemon harmonizes with the creamy yogurt ice cream, creating a refreshing and light aftertaste. It is a recommended dish to finish the meal, gently resetting your palate while complementing the lingering flavors of the Korean hot pot.

[Limited Time] Korean Hot Pot Set Meals (Eat-in Sets) Also Available!

We will be offering "Seafood Kimchi Hot Pot Set Meal" and "Gomtan Hot Pot Set Meal" as eat-in sets (single serving) for 2,580 yen (2,838 yen including tax) each, allowing you to easily enjoy the summer-limited menu.

The set includes meat (3 servings), seasonal vegetables such as "White Eggplant," "Okra," and "Sharegi," "Assorted Specialty Vegetables," limited-time exquisite dishes "Three Kinds of Domestic Vegetable Namul" and "Soy Milk Cold Noodles (Onyasai Style Kongguksu)," a choice of〆 (finisher) or rice, and the dessert "Yogurt Ice Cream and Lemon Bingsu," making it a fulfilling Onyasai experience. The broth will be served as a "two-color pot," combining either "Seafood Kimchi Broth with the Aroma of Three Kinds of Seafood" or "Gomtan Broth Full of Beef Umami" with a broth of your choice from 8 types. You can enjoy different flavors at once according to your mood and preference.

Seafood Kimchi Hot Pot Set Meal Gomtan Hot Pot Set Meal

[Product Overview] Summer Feast Korean Hot Pots "Seafood Kimchi Hot Pot" "Gomtan Hot Pot"

Product Name: Seafood Kimchi Hot Pot / Gomtan Hot Pot

Sales Period: Wednesday, July 15, 2026, to Tuesday, September 15, 2026

Applicable Courses:

<All-You-Can-Eat> 120-minute system (90-minute last order)

・Pork Course (6 types of meat) 3,980 yen per person (4,378 yen including tax)

・Beef Course (10 types of meat) 4,280 yen per person (4,708 yen including tax)

・Kuroge Wagyu Beef Course (11 types of meat) 5,380 yen per person (5,918 yen including tax)

・Marbled Kuroge Wagyu Beef Course (12 types of meat) 6,880 yen per person (7,568 yen including tax)

*Marbled Kuroge Wagyu Beef is not available at some stores.

▶ Children under elementary school age are free, elementary school students are half price, and seniors aged 60 and over receive a 500 yen discount.

<Set Meal> Eat-in Set

・Seafood Kimchi Hot Pot Set Meal 2,580 yen per person (2,838 yen including tax)

・Gomtan Hot Pot Set Meal 2,580 yen per person (2,838 yen including tax)

"Seafood Kimchi Hot Pot & Gomtan Hot Pot" - Learn More Here

[Company Overview]

Rains International Co., Ltd.

President and Representative Director: Kota Sumikawa

Operates restaurants such as Shabu-shabu Onyasai, Gyukaku, Izaakaya Domadoma, and Tonkatsu Kagurazaka Sakura.